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Restricted Stock (Tables)
12 Months Ended
Mar. 31, 2017
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]  
Schedule of non-vested restricted stock
    Employee
Plan
Number of
Shares (In
thousands)
    Director
Plan
Number of
Shares (In
thousands)
    Both Plans
Number of
Shares (In
thousands)
 
                   
Non-vested restricted stock outstanding at March 31, 2016     206       60       266  
                         
Restricted stock granted     50       30       80  
                         
Restricted stock vested     (83 )     (30 )     (113 )
                         
Restricted stock forfeited or expired     (1 )     -       (1 )
                         
Non-vested restricted stock outstanding at March 31, 2017     172       60       232